Last updated: 13 November 2026.
1. The agreement#
This end-user license agreement ("agreement") is between you and StackRegent, the maker and licensor of the StackRegent software ("we", "us"). It applies when you install, activate or use the StackRegent software, including its installer, its command line tool, the migration agent and the StackRegent Migrator extension. By installing or using the software you accept this agreement. The terms of service also apply.
The software is licensed, not sold. We and our licensors keep all rights in it that this agreement does not expressly give you.
2. The license#
While your license is active and paid, or during a free trial, we grant you a non-exclusive, non-transferable license to install and run one copy of StackRegent on one server, to provide hosting services to yourself and to your own customers and resellers.
Your customers and resellers may use the reseller and customer panels of your installation as part of the hosting services you provide. They do not need licenses of their own, and they are not parties to this agreement; you are responsible for their use of the panel.
3. One server per license key#
Each license key, in the form SR-XXXXX-XXXXX-XXXXX-XXXXX, covers exactly one server. You may not run one key on several servers at the same time, whether physical or virtual, and you may not use one installation to manage hosting on other servers that would otherwise need their own license.
4. Machine binding and license checks#
A license key is bound to the Windows machine ID of the server on which it is first checked. The software checks the license with our license server every 24 hours; if a check fails, it retries after one hour and then every six hours. A check sends the license key, the product code, a hash of the machine ID, the server host name, the software version and the number of hosting accounts in use; the privacy policy explains how we handle this.
If the license server cannot be reached, the software keeps working on its last successful check and then for a grace period. To move the software to another server, for example after replacing hardware or reinstalling Windows, ask for the license to be reissued in the client area; the next check binds it to the new machine.
5. Account limits#
Each plan sets the number of hosting accounts (subscriptions) the installation may hold. Domains, mailboxes, databases, FTP accounts and customer users within those subscriptions are not limited by the license. To hold more subscriptions, move to a larger plan. Every plan includes every feature of the software.
6. Updates#
Updates and new releases published while your license is active are included at no extra charge. Updates are delivered only from our license server. Each release is signed with the StackRegent release key, and the software installs it only after verifying its size, SHA-256 hash and signature. You may choose when to install updates, but fixes, including security fixes, are provided only in new releases, as described in the lifecycle policy.
7. Restricted mode#
The software enters restricted mode when no valid key has been accepted, when our license server refuses the key (for example because the license has expired, was not renewed, was suspended or was cancelled), or when the license server could not be reached for longer than the grace period. In restricted mode:
- administrators can open only the license page;
- no new customers, resellers, subscriptions or domains can be created;
- updates cannot be installed;
- websites, mail, DNS, databases and the customer and reseller panels keep working.
Entering a valid key, or putting the license right in the client area, returns the software to normal use. Restricted mode exists so that a license problem never takes your customers offline; it is not permission to keep using the software without a license beyond the time needed to renew or move your customers.
8. What you may do#
You may:
- install the software on the licensed server and configure it as the documentation describes;
- brand the panel your customers see with your own name, logo and colors using the branding settings;
- add language packs and custom buttons, and use the REST API, the command line and the Event Manager to automate and integrate the software;
- make backups of the installation and its data;
- keep the data you and your customers store with the software; it is yours, not ours.
9. What you may not do#
You may not, and may not allow others to:
- copy, sell, resell, rent, lease, sublicense or share the software or a license key, except as a partner under a written partner agreement with us;
- run more installations than you have license keys for, or move one key between servers to avoid buying another;
- remove, bypass, disable or tamper with the license check, the grace period, restricted mode or the verification of update signatures;
- install updates or packages from any source other than our license server, or change the software's own files;
- reverse engineer, decompile or disassemble the software, except to the extent the law allows this despite this restriction;
- remove or change copyright, trademark or license notices in the software;
- use the software in breach of the acceptable use policy or the law.
10. Third-party components#
StackRegent can install and manage software made by others, such as IIS and other Windows features, PHP, MariaDB, SQL Server Express, MailEnable, Roundcube, phpMyAdmin, Node.js and ModSecurity with the OWASP Core Rule Set. Those components are provided under their own licenses, which you accept when you install them, and some, such as SQL Server Express, have their own usage limits. Your Windows Server licenses are your responsibility.
11. Term and termination#
This agreement lasts as long as you hold an active license or trial. It ends when your license ends without renewal, when you cancel it, or when we end it because you materially break this agreement, for example by bypassing the license check or sharing keys. Where reasonable, we give notice first and a chance to put things right.
When the agreement ends, the software enters restricted mode. You must stop using it to provide hosting services within a reasonable time and either renew or move your customers elsewhere; your websites, mail and DNS keep running in the meantime so you can do so. Sections 9, 12 and 13 survive the end of this agreement.
12. Warranty and liability#
The software is provided as described in its documentation. The warranty disclaimer and the limitation of liability in the terms of service apply to the software.
13. Export and sanctions#
You may not use or export the software in breach of export control or sanctions laws that apply to you or to us.
14. Contact#
Questions about this agreement: sales@stackregent.com. To report a security issue in the software, see the security page.